diff --git a/E2E-tests/src/substrate_api.py b/E2E-tests/src/substrate_api.py
index 0b25d6bf9..e31760eec 100644
--- a/E2E-tests/src/substrate_api.py
+++ b/E2E-tests/src/substrate_api.py
@@ -647,7 +647,8 @@ def get_block_header(self, block_no):
         return self.substrate.get_block_header(block_number=block_no)["header"]
 
     def get_block(self, block_no):
-        return self.substrate.get_block(block_number=block_no)
+        block_hash = self.substrate.get_block_hash(block_no)
+        return self.substrate.get_block(block_hash)
 
     def get_block_author(self, block_number):
         """Custom implementation of substrate.get_block(include_author=True) to get block author.